Smart filament Sensor (optical) for RepRapFirmware (RRF)

Smart filament sensor for usage with RRF (RepRapFirmware) --> used for several prints until now, two filament issues detected --> to low first layer, and after correcting this the filament were not moved anymore because the Titan Aero extruder makes a "mark" at one position of the filament only.

Update Version C: add small spacer, new wheel and case + update FreeCad source file

Update Version D: new mounting plate for horizontal or vertical mount, all threads now "printable", update for the RRF config

Bom:

screws:
three 3x16mm case
four 3x8mm mounting plate


Silent blocks (rubber wheels):
https://www.amazon.de/gp/product/B07PMP5D92/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

sensor:
https://www.amazon.de/gp/product/B0817FM4BJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

ball bearings:
https://www.amazon.de/gp/product/B08NDLLRQK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

RRF Config when it is connected to the e0stop pin:
M591 D0 P7 C"e0stop" L